The magnetically sensitive transistor, also known as the spin transistor, spin field-effect transistor (spinFET), Datta–Das spin transistor or spintronic transistor (named for spintronics, the technology which this development spawned), originally proposed in 1990 by Supriyo Datta and Biswajit Das,[1] is an alternative design on the common transistor invented in the 1940s. This device was considered one of the Nature milestones in spin in 2008.[2]